Question

My sister is ill. I must ________ her at home.

1. A.
   look at
2. B.
   look like
3. C.
   look for
4. D.
   look after

Answer 1

D
look at是“看……”，look like是“看起来像”，look for是“寻找”，look after是“照料”，因此只有look after和My sister is ill.搭配合适。